7zip and MalwareBytes detect potential malware

[JonThomas801]

7zip wouldn't open w64devkit-1.23.0.zip as it thought is was a virus, so I performed a scan via MalwareBytes and it suspected that w64devkit/bin/debugbreak.exe was "Generic.Malware/Suspicious".

[grable0]

Its a known false positive. If you are still unsure, you could always verify its tiny source and compile it yourself.

[skeeto]

False positive, see #79.